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Database Systems Competitive Exam MCQs – Mock Test 91

DBMS: Selection Operation Notes Questions with Answers PDF Download – Test 91

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DBMS: Selection Operation MCQs – Mock Test 91 PDF Download

MCQ: 451

In case of A4 search algorithm, if the indexing field is not a key, the strategy can retrieve

  1. Single record
  2. Two records
  3. Multiple records
  4. No records
MCQ: 452

The database that allows a system administrator to associate a function with a relation is called

  1. Virtual database
  2. Private database
  3. Custom database
  4. Virtual Private database
MCQ: 453

The operation on two relations that matches tuples whose values are same on all attribute names that are common to both relations, is known to be

  1. Cartesian Product operation
  2. Intersection operation
  3. Join operation
  4. Union operation
MCQ: 454

The pivot clause by its own doesn't calculate the

  1. Subtotals
  2. Attributes
  3. All values
  4. Subqueries
MCQ: 455

When a system has enters an undesirable state, the type of error occurred is called

  1. Logical error
  2. System error
  3. System crash
  4. Application error

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